Casualties unknown

Pilot Reports Abnormal Noise and Low-Voltage Light Before Landing Gear Collapse (N9551B)

Gig Harbor, WA, US

On April 14, 2001, a Cessna 172 RG (registration N9551B) was involved in an aviation accident near Gig Harbor, WA. Investigators recorded the probable cause as: The pilot's failure to extend the airplane's landing gear while landing. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

After takeoff, a pilot experienced a high-pitched hissing tone and low-voltage light, prompting a return to the airport. During landing, the right main landing gear collapsed following a go-around, with no pre-impact mechanical failure found.

Flight Events

Shortly after takeoff, the pilot noted a "high pitched hissing tone" accompanied by the illumination of the airplane's low-voltage light. The situation lasted for a few seconds before the hissing tone subsided and the low-voltage light returned to normal. The pilot stated that he thought there "might" be a problem with the aircraft's engine and elected to return to the airport and land.

The pilot turned the airplane 180 degrees and attempted to land on the opposing runway. After completing the turn, the pilot realigned the airplane on the runway centerline. He stated, "I thought I did reach over and put the landing gear lever in the down position, but I don't remember for sure."

Just before touchdown, the pilot heard what he thought was the sound of the propeller striking the runway. He applied power and initiated a go-around. The pilot then aborted the go-around and "put the gear down" in an attempt to land the airplane on the remaining runway.

Landing and Post-Accident Inspection

The airplane touched down on the runway and the right main landing gear leg collapsed. The airplane made several heading changes before coming to rest in a grassy area northeast of the runway.

A Federal Aviation Administration Inspector from the Flight Standards District Office inspected the airplane after the accident and reported that there was no evidence found to indicate a mechanical failure or malfunction with the airplane prior to the accident.

Frequently asked questions

What happened in the 14 Apr 2001 Cessna 172 RG accident near Gig Harbor, WA?

After takeoff, a pilot experienced a high-pitched hissing tone and low-voltage light, prompting a return to the airport. During landing, the right main landing gear collapsed following a go-around, with no pre-impact mechanical failure found.

What aircraft was involved and where did it happen?

The accident on 14 Apr 2001 involved a Cessna 172 RG, registration N9551B, at Gig Harbor, WA.

What was the probable cause of the accident?

The pilot's failure to extend the airplane's landing gear while landing.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20010417X00769. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.